Fig. 1
From: First molecular characterization of Dirofilaria Immitis in Cuba
Microscopic observation of microfilaria. (A) Microfilaria of the genus Dirofilaria identified on Giemsa-stained thin blood smears from a dog. The morphological marks show the position of several structures. CS: cephalic space; NR: nerve ring; Ex.P: excretory pore; AP: anal pore; TN: terminal nucleus. (1000× magnification). (B) Two distended microfilariae of the genus Dirofilaria (arrow) (100× magnification)